Conduit Bodies: Types and What to Confirm Before Ordering

Updated: August 6, 2026

TL;DR

Conduit bodies are available in several patterns, materials, hub sizes, connection styles, and environmental ratings. Before ordering or replacing one, confirm the complete manufacturer part number, body pattern, raceway system, hub size, material, connection type, cover and gasket requirements, dimensions, environmental conditions, listings, approved project use, quantity, and required date. Do not assume that two bodies with the same pattern and hub size are interchangeable.

What is a conduit body?

A conduit body is a fitting with a removable cover that provides access to the interior of a raceway system. Depending on the product and approved design, it may be used as an access or pulling point, at a change in direction, or as another documented part of the raceway layout.

The body pattern describes the general arrangement of its hubs and cover. The pattern alone does not establish the product’s size, material, connection, environmental suitability, dimensions, listing, conductor capacity, or approved use.

Common conduit-body patterns

Manufacturers offer several commonly recognized configurations. Always verify the manufacturer’s drawing because orientation, dimensions, and naming can vary by product family.

LB

An LB generally has one hub at the end and another entering through the back of the body. The removable cover is normally opposite the back opening.

LL and LR

LL and LR bodies generally have one end hub and one side hub. The left or right designation identifies the body’s orientation when viewed according to the manufacturer’s convention.

C

A Type C body generally has hubs at opposite ends, creating a straight-through configuration with a removable access cover.

T

A Type T body generally has three hubs arranged in a tee configuration.

X

A Type X body generally has four hubs arranged in a cross configuration.

Other patterns and product families

Additional configurations may include E, L, universal, service-entrance, explosion-proof, larger-capacity, or manufacturer-specific designs. Do not substitute one pattern for another without checking the approved raceway layout and manufacturer documentation.

Start with the complete part number

When replacing an existing conduit body, record:

• Manufacturer
• Complete catalog or part number
• Series or product family
• Body pattern
• Hub size
• Material and finish
• Connection or hub type
• Every suffix and option code
• Required cover, gasket, or accessory number
• Listing and environmental markings

Do not shorten the part number. A suffix may identify a different material, cover, gasket, connection, rating, hub arrangement, or approval.

Confirm the body pattern and orientation

An LB, LL, LR, C, T, or X designation is only the starting point. Confirm how the openings and cover must be oriented in the approved raceway layout.

Useful information includes:

• The required pattern
• The direction of each raceway entry
• The required cover orientation
• Available access around the cover
• Nearby walls, equipment, ceilings, or structural obstructions
• Whether the installation is new or a direct replacement

A photograph or marked-up project drawing can help prevent confusion between left, right, back, end, and straight-through configurations.

Identify the raceway and hub information

Provide the raceway information established by the approved project documents:

• Raceway type and material
• Trade size
• Number of hubs
• Hub arrangement
• Threaded, socket, integral, or other connection style
• Required adapters, connectors, reducers, or transition fittings
• Manufacturer compatibility requirements

The hub size alone does not establish compatibility. Confirm the connection method, raceway material, product listing, manufacturer instructions, and approved system design.

Confirm the material and finish

Conduit bodies are offered in metallic and nonmetallic materials. The required material must come from the project documents, manufacturer information, facility standards, or the qualified professional responsible for the raceway system.

Record:

• Body material
• Cover material
• Finish or coating
• Fastener material
• Gasket material when specified
• Required corrosion-resistance or chemical-resistance documentation
• Approved transition or compatibility requirements

Do not select a material based only on a general description such as indoor, outdoor, coastal, industrial, or corrosion-resistant. Document the actual exposure and required product rating.

Document the environment

Provide the conditions identified for the installation location:

• Indoor or outdoor location
• Dry, damp, or wet conditions
• Direct weather exposure
• Salt air or coastal exposure
• Dust, debris, oil, chemicals, or washdown
• Corrosive conditions
• Temperature range
• Hazardous or classified-location requirements
• Required enclosure or environmental rating

Specialized or hazardous locations require product and system review by the qualified professional responsible for the design. A visually similar general-purpose body is not an acceptable substitute for a specialized product.

Confirm covers, gaskets, and accessories

Some conduit bodies are supplied with a cover and gasket, while others require separate components. Confirm what is included before ordering.

Check:

• Cover included or sold separately
• Gasket included or sold separately
• Exact cover part number
• Exact gasket part number
• Fasteners and hardware included
• Required cover material and style
• Compatibility with the body manufacturer, pattern, series, and size
• Required environmental rating for the complete assembly

A cover or gasket that appears to fit may not be identified for the body or may not maintain the required assembly rating.

Record the dimensions and access requirements

Collect the manufacturer’s dimensional information and compare it with the approved layout:

• Overall length, width, and depth
• Hub centerlines and orientation
• Cover dimensions
• Required clearance for opening the cover
• Mounting or support information when applicable
• Interior dimensions shown by the manufacturer
• Space available at the installation location

Do not assume that all products with the same pattern and hub size have the same external or internal dimensions.

Clarify the approved use

Tell the supplier how the conduit body is identified in the approved project documents. Examples may include an access point, pulling point, directional change, equipment connection, service entry, replacement fitting, or another documented use.

Provide:

• The applicable plan, detail, or specification
• The approved raceway layout
• Conductor and raceway information established by the design
• Any required manufacturer dimensions or markings
• Whether the product is a direct replacement
• Whether a proposed substitution requires approval

Revco can help identify products and obtain available manufacturer documentation. Revco should not be asked to perform raceway design, conductor-fill calculations, pull calculations, splice calculations, grounding design, or code approval from an incomplete description.

Photos and documents that help

When safely accessible, provide:

• A clear photograph of the product label or casting marks
• The complete body and cover
• Each hub and connection
• The existing raceway arrangement
• Nearby walls, equipment, or obstructions
• The manufacturer data sheet
• Approved project drawings or details
• The previous invoice or order record

Do not open energized equipment, remove covers from energized systems, disturb conductors, or access unsafe locations solely to identify a product.

Common ordering mistakes

• Ordering from appearance alone
• Confusing LB, LL, and LR orientation
• Providing the hub size without the connection type
• Assuming all bodies fit every raceway material
• Leaving suffixes off the part number
• Assuming the cover and gasket are included
• Mixing body, cover, and gasket manufacturers or series without confirmation
• Ignoring overall dimensions and cover access
• Using a general-purpose product where specialized ratings are required
• Treating a proposed substitute as approved

What to bring to Revco

Before requesting a quote or replacement, gather:

• Manufacturer and complete part number
• Pattern and orientation
• Hub size and number of hubs
• Raceway type and material
• Connection type
• Body material and finish
• Cover and gasket requirements
• Environmental and listing requirements
• Manufacturer dimensions
• Approved project use
• Clear photographs and supporting documents
• Quantity and required date

Browse Revco’s conduit bodies, conduit body covers, conduit body gaskets, and conduit fittings. Confirm the exact product, quantity, branch availability, and order timing before visiting.

About Revco Lighting & Electrical Supply

Revco Lighting & Electrical Supply operates six locations across Suffolk County, New York. Visit the Revco locations page to find your preferred branch.

Important notice

This article is a product-identification and order-preparation guide. It does not provide raceway design, box-fill calculations, pull calculations, splice calculations, conductor selection, grounding or bonding design, environmental classification, installation instructions, testing, troubleshooting, code interpretation, or project approval. Final selection and use must follow approved project documents, current manufacturer information, applicable requirements, and the qualified professionals responsible for the work.